List of top Questions asked in GATE EY- 2022

The Bateman gradient is a popular explanation for why the strength of sexual selection is typically stronger on males than on females. Which one of the following figures is the correct representation of the Bateman gradient? In all figures, the dotted line represents males and the solid line females.
Sparrows use two foraging tactics to obtain food. They either search for grains themselves (Producer tactic P) or follow other individuals and steal grains from them (Scrounger tactic S). The following graphs show how the fitness of each tactic (P : dashed line and S : solid line) varies as a function of the relative frequency of S. Which one of the graphs shows the correct representation of these tactics if they were maintained through negative frequency dependence?
The term “living fossil” applies to which one or more of the following organisms?
Which one or more of the following reasons has/have been invoked to explain island gigantism?
Which one or more of the following options represent(s) life history trade-offs?
Certain plants and animals rely on toxins such as cardiac glycosides for self-defense. Digitoxin and bufalin, structurally similar toxins produced by foxglove plants and bufonid toads, respectively, are one such example. Which one of the following statements about these toxins is correct?
A behavioural ecologist records the number of times a kingfisher succeeds in catching fish over multiple five-minute intervals. Which one of the following distributions best describes these data?
Excess fertilizers used in agriculture commonly end up as runoff and cause phytoplankton blooms in rivers. To figure out whether these blooms were driven by ammonium or phosphate fertilizers, researchers cultured a phytoplankton species in multiple samples of unpolluted river water. The samples were divided equally among three treatments: ammonium fertilizer added, phosphate fertilizer added, and no fertilizer added. They then measured phytoplankton density in each of the samples after a week. Phytoplankton densities (in thousands of cells/ml) are reported in the table shown.
Which one of the following does not help maintain genetic diversity at a given locus?
Which one of the following is potentially explained by the mid-domain effect?
The graph shows the yield of coffee plantations located at different distances from a patch of primary forest.
Which one of the following options best explains this pattern?
Which one or more of the following bird species is/are the focus of conservation-oriented captive breeding efforts in India?
Which one or more of the following is/are not an example of a zoonotic disease(s)?
Small islands tend to have fewer species than nearby large islands. Which one or more of the following reasons explain(s) this outcome?
Which one of the following is not an expected impact of global warming?
Which one of the following represents the chemical energy available to herbivores in an ecosystem?
Which one of the following major mass extinctions is the most recent?
Which one of the following processes is not likely to lead to the stable coexistence of two species at the same trophic level within an ecological community?
Which one of the following organisms is a cytoplasmically inherited symbiotic bacterium that can cause extreme female-biased sex ratios in many insects?
A cross between a pure-bred plant with red flowers and a pure-bred plant with white flowers produced F1 generation with pink flowers. If the plants with pink flowers are selfed, what is the proportion of white : pink : red flowers expected in the next generation?
A gene coding for a particular protein exhibits 2% DNA sequence divergence between humans and chimpanzees. However, protein sequences encoded by them are identical. Which one of the following processes explains this?
Which one of the following sets of characteristics is most likely to cause population extinction via demographic stochasticity?
Consider the following strains of an influenza virus and their basic reproduction numbers (\(R_0\)). Assuming that they are all equally virulent, which one of the following strains would be most concerning for a completely vulnerable population of humans?
Which one of the following statements is true with respect to energy requirements of photosynthesis in C3 and C4 biochemical cycles?
Which one of the following is a proximate explanation for grouping in animals?